1.

Excited hydrogen atom emits light in the ultraviolet region at\[2.47\times {{10}^{15}}Hz\]. With this frequency, the energy of a single photon is: \[(h=6.63\times {{10}^{-34}}Js)\]

A. \[8.041\times {{10}^{-40}}J\]
B. \[2.680\times {{10}^{-19}}J\]
C. \[1.640\times {{10}^{-18}}J\]
D. \[6.111\times {{10}^{-17}}J\]
Answer» D. \[6.111\times {{10}^{-17}}J\]


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